Shimmick (NASDAQ: SHIM) is a U.S.-based infrastructure design and construction firm specializing in heavy civil and marine projects. The company offers a full suite of services, including engineering, procurement and construction management for large-scale public works initiatives. Its core competencies encompass bridge and tunnel construction, water and wastewater facilities, marine terminals and underground utilities. Shimmick’s integrated approach blends in-house design expertise with field operations to deliver turnkey solutions across complex infrastructure asset classes.
Founded in 1931 by Harry Shimmick in Walnut Creek, California, the firm built its early reputation on roadway improvements and hydraulic structures throughout the San Francisco Bay Area. In the decades that followed, Shimmick expanded into rail systems, delivering key segments of the Bay Area Rapid Transit (BART) network and major transbay tunneling contracts. The company’s history of pioneering tunneling and marine construction has positioned it as a preferred contractor for municipalities and regional transit authorities seeking robust, technically sophisticated infrastructure solutions.
Today, Shimmick serves a diversified client base spanning public agencies, utilities and private developers across the Western United States. Its project portfolio extends from California and Nevada to the Pacific Northwest, encompassing dam upgrades, seawall rehabilitation and water treatment plant expansions. The company has also pursued select design-build ventures in renewable energy and hydropower, leveraging its civil construction heritage to support sustainable infrastructure initiatives. Shimmick’s ability to manage environmental permitting and community outreach has been integral to its success on work sites with sensitive ecological or urban constraints.
Headquartered in Walnut Creek, Shimmick is guided by a leadership team with deep industry experience and an emphasis on safety, innovation and community engagement. Under Chief Executive Officer John Shimmick and President Mary Caldwell, the firm has strengthened its internal project controls, digital modeling capabilities and supplier partnerships. Committed to professional development, Shimmick invests in training programs for field crews and engineers, ensuring that its workforce remains at the forefront of construction technology and best practices.
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